Hydrologic Region Map Tool

The Hydrologic Region Map is a tool complimentary to the California Public Utilities Commission's Water-Energy Calculator. Use this map to determine required information to enter into the calculator. Together, these tools calculate embedded energy saved by water efficiency.

Follow these steps to use the map:

1. Enter project site address.
2. Copy the "Hydrologic Unit Code" value.
3. Paste value into "Hydrologic Region" column in the second tab of the Water Energy Cost Effectiveness Calculator sheet.

Helpful links

Water Energy Cost Effectiveness Calculator

The Water-Energy Calculator spreadsheet can be found on the California Public Utility Commission’s website.

Visit the Water Energy Cost Effectiveness Calculator

California Water Association's list of IOU Water Agencies

This list helps determine if a water agency is an Investor Owned Utility (IOU) or non-Investor Owned Utility (non-IOU). The information is required for the Water-Energy Calculator. If your water agency appears on the list, it is an IOU. If it does not appear on the list, it is most likely a non-IOU.

 

Visit the California Water Association's list of IOU Water Agencies
Frequently asked questions about Water Energy Nexus (PDF, 173 KB)